baber/WOPTO huggingface dataset:
Patent GB-809950-A (GB)
Title: Improvements in or relating to aircraft under-carriages
Inventor: CAMERON-JOHNSON ALAN
IPC: B64C25/34
Filed: 1956-04-17
Abstract: 809,950. Aircraft undercarriages. BRITISH MESSIER Ltd. April 15, 1957 [April 17, 1956], No. 11697/56. Class 4. An aircraft undercarriage comprises a sideways retracting leg 11 and a bracing member such as a drag strut 30 pivoted at one end to the aircraft at a position spaced fore or aft of the leg mounting, and connected at the other end to the leg through a comparatively short further member pivoted to leg and the bracing member, a lock for locking the further member rigidly to the leg, and means for disconnecting the lock on retraction to allow pivotal movement of the further member relatively to the leg to bring the bracing member on retraction more nearly parallel to the air flow on the under surface of the aircraft. The invention is particularly applicable when the bracing member in the retracted position lies athwart a wing spar which may not be recessed, whereby the bracing member lies outside the wing contour. In Figs. 1 and 2, the further member comprises a pair of wishbone arms, 43 35 pivoted to the leg on a pin 41 extending through the leg and inclined downwardly and outwardly, going from front to rear. The wishbone joint is universally pivoted to the drag strut 30, and a seating 40 for the joint is provided on the front outer quarter of the leg. In the extended position shown, a link 42 pivoted to the aircraft and to the wishbone arm 34 causes the joint to rest on the seating 40 where it is locked, holding the wishbone rigid with the leg. On retraction, the link 42 unlocks the lock and the wishbone arms are free to pivot on pin 41. The leg is pivoted on a transverse axis 24 to a member 25 mounted in the aircraft wing on a retraction spindle 27. A jack 28 coupled to an arm 29 on member 25 effects retraction, and a telescopic side stay 32 is provided. A trailing link 13, bogie frame 14, shock absorber 19, bogie damper 21, and brake compensating links 37, 38, 39 are as described in Specification 809,949. The bogie retracts into the wing root and the fuselage.
Patent GB-1396054-A (GB)
Title: Field-effect gridistor-type transistor structure
IPC: H01L29/80
Filed: 1973-03-12
Abstract: 1396054 Field effect transistors S TESZNER 12 March 1973 [10 March 1972 9 Nov 1972] 11734/73 Heading H1K A JUGFET comprises a semi-conductor body having a central region flanked by upper and lower regions of the same conductivity type but higher resistivity, source and drain contacts on upper and lower faces of the body and a gate region of opposite conductivity type which defines a multiplicity of channels and is surrounded and ohmically contacted by a frame of said opposite conductivity type, both frame and gate region being embedded in the central region but extending into the upper and lower regions. The frame may include bars dividing the channels into groups and may be ohmically contacted in a pit on the face of the body carrying the source electrode. A typical device is made by epitaxially depositing on an N+ silicon substrate an N- and then an N-type layer and forming the gate region and frame by metalmasked boron-ion implantation or oxidemasked diffusion into the N+ layer. An N- epitaxial layer is then deposited by low temperature disproportionation of a silane, a pit extending down to the frame and bars formed in this layer by chemical etching or ion-machining and an N+ source contact region formed by a low temperature phosphorus diffusion. Pyrolytic silica or pyrohydrolytic alumina is next deposited over the pitted face at a low temperature and apertured to accommodate deposited source and gate electrodes. In the resulting device the centres of the channels are constituted by parts of the N-type layer and their ends by the N-layers thus ensuring a more uniform effective channel cross-section, and reduced parasitic capacity. The resistivity of the N-type layer may be graded to provide a further improvement.
Patent GB-216123-A (GB)
Title: Apparatus for the development of cinematographic or like films
IPC: G03D13/12
Filed: 1924-05-12
Abstract: 216,123. PathÚ Cinema, Anciens Etablissements PathÚ FrÞres. May 19, 1923, [Convention date] Troys, dishes, and containers for roll-films. -A support for kinematograph or like films during bank development &c. comprises a rigid frame having two fixed cross-pieces above and below which are arranged movable crosspieces of increasing width. Each pair of crosspieces, one upper and one lower, constitutes a support round which the film may be continuously wound in laterally spaced loops, the winding commencing on the innermost pair, and continuing on successive pairs in loops which become longer and wider in passing from one pair of cross-pieces to the next. The support is adapted to fit a tank having an enveloping cover carrying external means for supporting the frame during winding of the film thereon. In the form shown, the frame comprises channelled members 1, 1<a>, which are rigidly united by cross-pieces 3, 3a, and form guideways for movable cross-pieces 4, 4<a>. 5, 5<a>, &c, provided with spacing lugs 7. The eross-pieces have projections 8 for laterally spacing the loops of film, and increase in width, as shown in Fig. 4, from the fixed cross-pieces outwardly, so that the loops of film wound on any one pair envelop, without touching, the loops on the previously wound pairs. Catches 9, 10 are provided for securing the ends of the film. The members 1, 1<a>, carry wire guide frames 6, 6<a> fitting a tank 11 having an enveloping cover 12 provided with lugs for supporting members 15 adapted to receive a spindle 16 upon which the frame may be removably mounted, when the tank is turned as shown into horizontal position, in order to facilitate the winding thereon of the film ready for treatment in the tank. The cover may be used as a fixing and washing tank, and is provided with a drain plug 13.
Patent GB-294300-A (GB)
Title: Improvements in or relating to frame aerials for use in radio receiving apparatus
IPC: H01Q7/00
Filed: 1927-05-03
Abstract: 294,300. Thoms, P. Perring-. May 3, 1927. No Patent granted (Sealing fee not paid). Aerials; thermionic amplifiers.-Separate longwave and short-wave frame-aerial windings are combined with a switch so arranged that in one position of the switch the long-wave aerial 1 is alone in circuit as shown in Fig. 2, whilst in the other switch position, the short-wave aerial 2 is inserted across the input circuit of the valve, and the long-wave aerial 1 is connected as shown in Fig. 3 so as to increase the pick-up effect. An intermediate tapping on each aerial is taken to the filament, as shown, the condenser 3 providing reaction control.
Patent GB-723921-A (GB)
Title: Process and catalyst for polymerizing halogen-substituted ethylenes
IPC: C08F14/22
Filed: 1952-05-12
Abstract: A polymer or copolymer of a partly or completely halogen-substituted ethylene containing only chlorine or fluorine or both as the halogen substitutent is made by polymerizing such partly or completely chlorine- or fluorine-substituted ethylene in the presence of a bis (perfluoroacyl) peroxide containing at least 3 carbon atoms in the acyl group thereof as a catalyst.  Peroxides specified are bis (pentafluoropropionyl) peroxide, bis (heptafluorobutyryl) peroxide and bis (hendecafluorocaproyl) peroxide.  Monomers specified are chlortrifluoroethylene, trichlorofluoroethylene, 1,1-dichloro-2,2-difluoroethylene and mixtures thereof, vinyl chloride, vinyl fluoride, vinylidene chloride, vinylidene fluoride, mixtures of two or more of such monomers and mixtures of any of the above monomers with vinyl acetate or a lower alkyl acrylate or methacrylate.  The catalyst is added to the monomeric starting material in solution in a saturated organic solvent completely halogenated with fluorine or with fluorine and chlorine, such as trichlorofluoromethane, dichlorodifluoromethane, 1,1,2-trichloro-1,2,2-trifluoroethane, perfluorobutane, perfluoropentane, perfluoro-octane or perfluorotetrahydrofuran. Reference has been directed by the Comptroller to Specification 694,164.ALSO:Bis (perfluoroacyl) peroxides are prepared by reacting a perfluoroacyl halide and an alkali metal peroxide at a temperature between -15 DEG  C. and 25 DEG  C. in the presence of water and a water-immiscible organic solvent which is substantially inert to the reactants, and recovering from the reaction mixture a solution of the resulting bis (perfluoroacyl) peroxide in the organic solvent.  The preparations of bis (heptafluorobutyryl) peroxide, bis (pentafluoropropionyl) peroxide and bis (hendecafluorocaproyl) peroxide are described.  Reference has been directed by the Comptroller to Specification 694,164.
Patent GB-474215-A (GB)
Title: Improvements in motor vehicles
IPC: B60K5/08
Filed: 1937-04-27
Abstract: 474,215. Motor vehicles. TATRA WORKS, Ltd. MOTOR CAR & RAILWAY CARRIAGE & WAGON BUILDERS, and LEDWINKA, H. April 27, 1937, No. 12055. Addition to 452,918. [Class 79 (iii)] [Also in Group XXXII] The arrangement described in the parent Specification is modified by mounting the additional pairs of steering wheels by means of arms under spring control. As shown the axles of the additional wheels 6, 7, are connected to the rotatable frame or power unit 1 by pivoted arms or levers 4 under the control of laminated springs 8, 9 anchored to the unit 1.
Patent GB-316637-A (GB)
Title: Improved process for the conversion of hydrocarbons of high boiling point into others of low boiling point
IPC: C10G11/02
Filed: 1928-04-26
Abstract: 316,637. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). April 26, 1928. Hydrocarbons of low molecular weight are obtained bv splitting hydrocarbons of high molecular weight, such as mineral or tar oils, in the presence of a catalyst consisting of or containing a salt of metaphosphoric acid, especially a heavy metal salt, and in particular the metaphosphates of metals of the sixth group of the periodic system, e.g. uranyl and chromium metalphosphates. The process may be carried out in the liquid or gaseous phase, but preferably by passing the vaporized hydrocarbons over the catalyst in association with inert gases, such as nitrogen and carbon dioxide, at temperatures from 400‹-800‹ C. and, if desirable, under pressures up to 50 atmospheres. A carrier for the catalyst, e.g., pumice or silica gel may be used. In addition to hydrocarbons of low boiling point, unsaturated hydrocarbons, e.g. ethylene, propylene and butylene, are obtained.
Patent GB-1382376-A (GB)
Title: 3he-4he dilution refrigerator and a method for starting the same
IPC: F25B9/12
Filed: 1973-03-14
Abstract: 1382376 Refrigerating N V PHILIPS GLOEILAMPENFABRIEKEN 14 March 1973 [17 March 1972] 12247/73 Heading F4H A refrigeration system operating by the circulation of a <SP>3</SP>He, <SP>4</SP>He below the # transition point is adapted to be started by a method involving the fixed quantity of <SP>3</SP>He-<SP>4</SP>He mixture required in the closed system during operation. As shown, the system comprises a cryostat 8 containing a mixing chamber 1 and an evaporation reservoir 3 connected by a duct 2 and arranged in a vacuum space 7. The inlet duct 4 from the pump assembly 9 passes through the evaporation reservoir 3 to the chamber 1 and exchanges heat with the duct 2 at 6. The outlet duct 5 connects the reservoir 3 to the pump assembly 9. To start the system, a quantity of liquid helium is introduced into the cryostat 8 valves 12, 16 are closed and valves 18, 20 are opened so that the <SP>3</SP>He-<SP>4</SP>He mixture in a reservoir 19 passes via outlet duct 5 and condenses in the cold part of the system. Valves 18, 20 are then closed and valve 12 opened for the pump to draw gas from the outlet duct 5 to be stored in an auxiliary reservoir 15. On closing valve 12 and opening valve 18, the gas flows from the reservoir 15 through the outlet duct 5 and condenses in the cold parts of the system. This process is repeated about four times, after which valve 18 is closed and valves 12, 16 are opened. The pump then feeds a rich mixture to the chamber 1 where it is subjected to a phase transition, producing cold. In the evaporation reservoir 3 mainly the more volatile <SP>3</SP>He escapes and is drawn off by the pumping assembly 9, which comprises a diffusion pump 10 and a rotation pump 11.
Patent GB-670932-A (GB)
Title: Fork truck having pivotally mounted extension for high level dumping
IPC: B66F9/19
Filed: 1950-05-17
Abstract: 670,932. Lift trucks; skips. DEMPSTER BROS., Inc. May 17, 1950. [June 13, 1949] No. 12294/50. Classes 78 (iii) and 78 (iv). In a fork truck of the kind provided with upstanding ways on which the carriage of the fork travels, a pivotally mounted extension of the ways is provided which is moved into and out of operative position without movement of the carriage. The ways 17, 18 are secured rigidly to the truck and have slidably mounted on them members 19, 20 which are connected at their upper ends by a plate 21. Arms 47 forming an extension of the ways 17, 18 are fixed to a shaft 46 which can be rotated through chain- and-sprocket mechanism by turning a crank 53. A gear 34 is mounted in brackets depending from the plate 21 and is engaged by a chain 35, the lower end of which is attached to a plate 22 on the fork carriage and the upper end of which is secured to a fixture. The support for the gear is connected to means for raising and lowering it, such as the piston of a hydraulic cylinder. Brackets 44 on the outer faces of the ways 17, 18 support plates 41 which are spaced from the ways. Extensions 45, Fig. 7, of these plates support the shaft 46. A spring 56, which may be adjustably tensioned, is connected to lugs on the arm 47 and to a pivot 59 at the upper end of the corresponding plate 41. These springs are adjusted so that they balance the arms 47 when the latter are in the position shown in Fig. 1 resting on a member 60 mounted on the truck. Each arm has a hook 68, Fig. 9, pivoted at 67 and held against a stop 79 by a spring 75. A pivoted latch 81 can move between stops 82, 83 over the notch 71. The dumping container 87, Fig. 5, has a hinged bottom 88 and a pair of bails 90 on its rear wall to engage the hooks 68. During hoisting each bail engages the edge 73 of a hook and moves the latter anticlockwise against the tension of the spring 75. When a bail encounters the nose 85 of a latch, it lifts it and the bail enters the notch 71 on slight lowering of the carriage and is retained by the latch. On further lowering of the carriage, the bottom 88 opens and the contents are discharged. The downward movement of the carriage is limited by spring- pressed pivoted latches 91 to prevent swinging of the container over the tops of the members 29, 30 of the carriage against the extension. These latches are turned out of the path of the container when the attendant pulls the cord 101. When discharge is complete, the carriage is raised, whereupon the bottom is closed and the bails raise the latches 81 and pass above them. On reversal of the movement, the bails pass over the surface 86 of the latches, and the carriage descends to the position shown in Fig. 1.
Patent GB-1030223-A (GB)
Title: Improvements in bridge rectifier circuits
Inventor: SCOLES GRAHAM JOHN
IPC: H02M7/15
Filed: 1962-03-30
Abstract: 1,030,223. Rectifying. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 25, 1963 [March 30, 1962], No. 12360/62. Heading H2F. A rectifier arrangement comprises a number of single-phase, phase-controlled, bridge rectifiers energized from successive phases of an A.C. supply and with their D.C. sides connected in series to a common load. Each bridge may be of the kind disclosed in Specification 951,386, in which two additional uncontrolled rectifiers (or controlled rectifiers arranged to always conduct when forward voltage is applied) are connected as additional arms of the bridge supplied from the mid-point of the secondary winding. Alternatively the bridge may be of the type claimed in Specification 1,030,224, divided out of this Specification, comprising a pair of controlled rectifiers and a pair of uncontrolled rectifiers, each pair being connected in series anode to cathode across the D.C. terminals. In Fig. 2 two bridges, with additional rectifiers, are connected in series on their D.C. sides and fed with a two-phase supply derived from a Scott system. The two-phase supply could be obtained (Fig. 5, not shown) by supplying one bridge from one phase of a three-phase supply, and the other bridge from the other two phases, connected in series to give a voltage in quadrature with the voltage of the first phase. This arrangement gives an unbalanced three-phase load. In the arrangement of Fig. 4 there are three bridges in series, each bridge being supplied by one phase of the three-phase supply.
Patent GB-1140626-A (GB)
Title: Improvements in or relating to the treatment of hops
Inventor: DREXLER OLDRICH
IPC: C12C3/00
Filed: 1967-03-16
Abstract: 1,140,626. Conditioning dried hops. VYZKUMNY USTAV ZEMEDELSKYCH STROJU. March 16, 1967 [June 21, 1966], No.12384/67. Heading C6E. In a method for adjusting the humidity of hops after drying, heated air is positively driven through an air humidifier wherein it is wetted and simultaneously cooled, and is then blown from below through a layer of dried hop cones. Heated air drawn from the drying apparatus for the hops has its relative humidity adjusted to 60-70% in the humidifier and the humidified and cooled air is blown for at least 60 minutes through a layer of hop cones that have already been dried in the dryer to a moisture content of 5-7%, in order to raise their moisture content to 10-12% suitable for pressing them into bags. The layer of hop cones travels on two screen conveyers arranged in series, during the moistening treatment.
Patent GB-1329408-A (GB)
Title: Material discriminating device for metallic plates
IPC: G01N3/08
Filed: 1972-03-16
Abstract: 1329408 Hardness testing MITSUBISHI JUKOGYO K K 16 March 1972 [27 March 1971 (3)] 12442/72 Headings G1N and G1S Articles made of a metallic material of hardness less than a predetermined amount are detected by subjecting each article to a predetermined load and detecting any permanent deformation of the article caused by the applied load. As shown, metallic plates 2 are conveyed by a conveyor D, Fig.6, along a channel 1' in a base member 1, past a pressing device 3 and a deformation detector 4. The device 3, Fig. 3 (not shown), applies, by means of a roller a predetermined load along the centre line of the plates as they pass thereby. The detector includes a device 24 which applies a downward force on the conveyor D and hence the plate 2 to one side of its centre line. Any permanently deformed plate has a portion raised thereby (as seen in dotted lines in Fig.6). This deformation is detected by a pair of coils 29, 30 arranged in a bridge circuit, Fig.7. The output of the bridge is applied to a threshold detector 34 whose output is applied to an AND gate 35 together with the output of a position detector 23.
Patent GB-125104-A (GB)
IPC: G01H11/02
Abstract: 125,104. Brown, S. G. May 18, 1916. Magnetic instruments.-In an electro-magnetic sound receiver or producer, a magnetic diaphragm d is mounted in close proximity to a magnetic plate a with grooves or depressions b containing the windings, which are so arranged as to make the projecting surfaces of the plate of alternate polarity. The plate and diaphragm may be laminated, and their contiguous faces accurately surfaced and mounted with an air-gap of one three-thousandth of an inch. For subaqueous signalling, a pressure-equalizing diaphragmf-encloses a space which is connected by a duct e to the air-gap. Air can be forced initially into the space behind the diaphragm f by way of a duct k and a small tube j. For working at high frequencies, the diaphragm may be supported at several points so as to raise its natural frequency of vibration. The Provisional Specification states that the projecting surfaces of the plate a may form the poles of one or more permanent magnets.
Patent GB-778626-A (GB)
Title: Improvements in, or relating to, doors
Inventor: HINCHLIFFE ERNEST DARBY
IPC: E06B7/36
Filed: 1954-04-30
Abstract: 778,626. Doors. HILLS (WEST BROMWICH), Ltd. April 22, 1955 [April 30, 1954], No. 12539/-54. Class 20(3) A door 1 which may be swung about an axis parallel to but spaced from the side of an opening, has a sheath 5 secured thereto to prevent fingers being trapped and injured, the sheath 5 having an arcuate surface which is concentric to the door axis and passes between the side of the door opening and the edge 6 of the door, the spaces between the sides of the door and the respective adjacent longitudinal edges of the sheath 5 being bridged by straight walls secured to the door. As shown the wall 3 has secured thereto a jamb 4 which is curved to correspond with the sheath 5. The sheath 5 has its straight walls 7 extending at right angles to the door 1 and secured thereto by angle bars 8.
Patent GB-353930-A (GB)
Title: Manufacture of cellulose derivatives
IPC: C08B15/06
Filed: 1930-04-23
Abstract: Loose or spun cotton, artificial silk, linters, wood cellulose and other fibrous cellulosic materials are converted without loss of their structure into cellulose derivatives having an affinity for acid-azo dyestuffs by treating with a diamine of aliphatic character a cellulose xanthate derivative obtainable by subjecting a cellulose xanthate to mild oxidation or to reaction with an agent adapted to link together molecules of the cellulose xanthate.  Suitable agents for this latter purpose are sulphur chloride, phosgene, thiophosgene, chlorocarbonic esters, acetyl chloride and the like.  The following diamines are specified:-piperazine, ethylenediamine and diethylethylenediamine.  In examples, cotton is treated in succession with the following reagents:-alcoholic caustic potash, carbon disulphide, a solution of iodine in carbon disulphide after acidification with acetic acid, and finally an aqueous solution of piperazine or diethylethylenediamine; in the place of iodine there may be used as oxidizing-agent benzoyl peroxide, p-toluenesulphodichloramine, amyl nitrite, or oxides of nitrogen, or alternatively the cellulose xanthate intermediately produced, may be treated with a solution in carbon disulphide of sulphur chloride, phosgene or chlorocarbonic ester; cotton is printed locally with a thickening consisting of caustic soda and British gum, is then treated with carbon disulphide, and after treatment with iodine, sulphur chloride, phosgene, &c. as above, is treated with aqueous solution of piperazine.  Materials treated according to the above examples are dyed in a bath of tartrazine or kiton red G, the bath being acidified with acetic acid, and the goods being entered at 30-40 DEG  C. and afterwards boiled.  Specifications 264,261 and 268,505, [both in Class 2 (ii), Cellulose &c.], are referred to.
Patent GB-1461762-A (GB)
Title: Metering means
IPC: B29C45/18
Filed: 1972-10-16
Abstract: 1461762 Metering apparatus FOSCOLOR Ltd 16 Oct 1973 [16 Oct 1972] 12569/75 Divided out of 1461761 Heading B8N [Also in Division B1] A metering device for feeding a measured quantity of a material from a source to a mixing device comprises a rotatable cylinder 2 with an opening 4 leading to a chamber 5 within the cylinder wall, the volume of the chamber being adjustable by the adjustment of a screw member 6 which extends through a threaded bore in the chamber bottom. The cylinder is rotatable by drive means between a position in which it receives material from the source and a position in which it discharges the measured quantity of material into the mixing device.